target/linux/generic/patches-3.18/950-vm_exports.patch

   1 --- a/mm/shmem.c
   2 +++ b/mm/shmem.c
   3 @@ -3377,6 +3377,15 @@ put_path:
   4         return res;
   5  }
   6
   7 +void shmem_set_file(struct vm_area_struct *vma, struct file *file)
   8 +{
   9 +       if (vma->vm_file)
  10 +               fput(vma->vm_file);
  11 +       vma->vm_file = file;
  12 +       vma->vm_ops = &shmem_vm_ops;
  13 +}
  14 +EXPORT_SYMBOL_GPL(shmem_set_file);
  15 +
  16  /**
  17   * shmem_kernel_file_setup - get an unlinked file living in tmpfs which must be
  18   *     kernel internal.  There will be NO LSM permission checks against the
  19 @@ -3416,11 +3425,8 @@ int shmem_zero_setup(struct vm_area_stru
  20         file = shmem_file_setup("dev/zero", size, vma->vm_flags);
  21         if (IS_ERR(file))
  22                 return PTR_ERR(file);
  23 +       shmem_set_file(vma, file);
  24
  25 -       if (vma->vm_file)
  26 -               fput(vma->vm_file);
  27 -       vma->vm_file = file;
  28 -       vma->vm_ops = &shmem_vm_ops;
  29         return 0;
  30  }
  31
  32 --- a/fs/file.c
  33 +++ b/fs/file.c
  34 @@ -216,6 +216,7 @@ static inline void __set_open_fd(int fd,
  35  {
  36         __set_bit(fd, fdt->open_fds);
  37  }
  38 +EXPORT_SYMBOL_GPL(expand_files);
  39
  40  static inline void __clear_open_fd(int fd, struct fdtable *fdt)
  41  {
  42 --- a/kernel/exit.c
  43 +++ b/kernel/exit.c
  44 @@ -461,6 +461,8 @@ static void exit_mm(struct task_struct *
  45         mmput(mm);
  46         clear_thread_flag(TIF_MEMDIE);
  47  }
  48 +EXPORT_SYMBOL_GPL(get_files_struct);
  49 +EXPORT_SYMBOL_GPL(put_files_struct);
  50
  51  /*
  52   * When we die, we re-parent all our children, and try to:
  53 --- a/kernel/sched/core.c
  54 +++ b/kernel/sched/core.c
  55 @@ -3188,6 +3188,7 @@ int can_nice(const struct task_struct *p
  56         return (nice_rlim <= task_rlimit(p, RLIMIT_NICE) ||
  57                 capable(CAP_SYS_NICE));
  58  }
  59 +EXPORT_SYMBOL_GPL(can_nice);
  60
  61  #ifdef __ARCH_WANT_SYS_NICE
  62
  63 --- a/mm/memory.c
  64 +++ b/mm/memory.c
  65 @@ -1404,6 +1404,7 @@ void zap_page_range(struct vm_area_struc
  66         mmu_notifier_invalidate_range_end(mm, start, end);
  67         tlb_finish_mmu(&tlb, start, end);
  68  }
  69 +EXPORT_SYMBOL_GPL(zap_page_range);
  70
  71  /**
  72   * zap_page_range_single - remove user pages in a given range
  73 --- a/mm/vmalloc.c
  74 +++ b/mm/vmalloc.c
  75 @@ -1372,6 +1372,7 @@ struct vm_struct *get_vm_area(unsigned l
  76                                   NUMA_NO_NODE, GFP_KERNEL,
  77                                   __builtin_return_address(0));
  78  }
  79 +EXPORT_SYMBOL_GPL(get_vm_area);
  80
  81  struct vm_struct *get_vm_area_caller(unsigned long size, unsigned long flags,
  82                                 const void *caller)
  83 --- a/include/linux/shmem_fs.h
  84 +++ b/include/linux/shmem_fs.h
  85 @@ -49,6 +49,8 @@ extern int shmem_init(void);
  86  extern int shmem_fill_super(struct super_block *sb, void *data, int silent);
  87  extern struct file *shmem_file_setup(const char *name,
  88                                         loff_t size, unsigned long flags);
  89 +
  90 +extern void shmem_set_file(struct vm_area_struct *vma, struct file *file);
  91  extern struct file *shmem_kernel_file_setup(const char *name, loff_t size,
  92                                             unsigned long flags);
  93  extern int shmem_zero_setup(struct vm_area_struct *);